Nepean Bay Weather Forecast

    • 9
    • 27

    Sunny

    • 15
    • 24

    Partly cloudy

    • 11
    • 26

    Sunny

    • 14
    • 26

    Partly cloudy

    • 15
    • 26

    Possible shower

    • 11
    • 21

    Partly cloudy

    • 8
    • 22

    Partly cloudy

Today 21 Apr Kangaroo Island

Mostly sunny. The chance of fog early this morning. Winds east to northeasterly 15 to 20 km/h turning northerly 20 to 30 km/h during the morning. Daytime maximum temperatures in the mid to high 20s.

Investigator Strait Coastal Waters

Wind
East to northeasterly 10 to 15 knots turning northerly during the morning. Winds reaching up to 20 knots inshore in the early afternoon.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Sunny.
Weather Situation
A strong high pressure system east of Tasmania will maintain a ridge over SA this week. A cold front is expected to weaken and slide across western and southern coasts during today and Wednesday. A second cold front may pass over the south again on Saturday with a high pressure system to follow over waters south of the Bight on Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Nepean Bay Temperature Statistics View More

April Temperature

Kingscote Airport (7km)

  • Lowest 18 April, 2026

    3.6 °C

  • Average April

    15.4 °C

  • Highest 6 April, 2026

    25.9 °C

Climate (2021–Present)

Kingscote Airport (7km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
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